Re: Error : virHostCPUGetKVMMaxVCPUs:1228 : KVM is not supported on this platform: Function not implemented.
On Tue, Aug 29, 2023 at 09:22:35PM +0200, Mario Marietto wrote:
Hello.
I'm running Debian bookworm on my ARM Chromebook,model "xe303c12" and
I've recompiled the kernel (5.4) to enable KVM,so now my system sounds like
this :
That's surely not the default kernel that comes with Debian bookworm,
as that 5.4 version is many years old.
IIUC the standard bookworm kernel will be 6.4
root@chromarietto:~# virsh domcapabilities --machine virt
--emulatorbin /usr/local/bin/qemu-system-arm
2023-08-29 10:17:59.110+0000: 1763: error : virHostCPUGetKVMMaxVCPUs:1228 :
KVM is not supported on this platform: Function not implemented ;
error: failed to get emulator capabilities
error: KVM is not supported on this platform: Function not implemented
This shows libvirt was built against a kernel that lacks the
kvm.h header file.
This is expected for armv7 as support for KVM on 32-bit arm was
deleted in the 5.7 kernel. I expect libvirt was built against
the kernel headers from Debian's default 6.4 kernel and thus
lacks KVM support.
Your booting of the old 5.4 kernel doesn't solve this - you
would actually need to build libvirt (and QEMU) against this
outdated kernel too.
With regards,
Daniel
--
|: https://berrange.com -o- https://www.flickr.com/photos/dberrange :|
|: https://libvirt.org -o- https://fstop138.berrange.com :|
|: https://entangle-photo.org -o- https://www.instagram.com/dberrange :|